Modern Organic Chemistry Research
MOCR
>
Volume 5, Number 1, August 2020
The Effect of SiO2/Al2O3 Ratio on Hydroisomerization Reaction Performance of Pd/SAPO-31 Catalysts
DOI:
10.22606/mocr.2020.51001
Author(s)
Yungang Jia, Tiezhen Zhang, Famin Sun, Wei Wu
Affiliation(s)
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Daqing Petrochemical Research Center, Petrochemical Research institute, CNPC, Daqing 163714, China
Heilongjiang University, Harbin 150080, China
Abstract
SAPO-31 molecular sieves with various (SiO
2)/(Al
2O
3) ratio were synthesized using
di-n-butylamine (DBA) as the template. The samples were well characterized by XRD, N2
sorption-desorption, SEM, NH3-TPD and Py-IR. The results showed that the sample had good
crystallinity (SiO2/Al2O3 ratio of 0.6). Isomerization of deoxidized vegetable oil is carried in a fixed-bed
reactor with 100ml catalyst at 2.0MPa, 350°C, WHSV 1.5, hydrogen-oil ratio 500:1. The highest
biodiesel yield of 92.2wt% was obtained over the Pd/SAPO-31(0.6) catalyst with solidifying point 0°C,
flash point 60°C and cetane number 74. Catalyst had no loss of activity and shows high stability and
excellent hydroisomerization performance.
Keywords
SAPO-31, biodiesel, hydroisomerization dewaxing, SiO
2/Al
2O
3 ratio, Pd
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